Improved vise



com sam QUIMBY S. BACKUS, OF WINCHENDON, MASSACHUSETTS.

Letters Patent No. 91,068, datelllJu/ne 8, 1869. g

IMPRovED rvrsn. f

The Schedule referred to in these Letters Patent and making part of the same.

T o all whom it may concern. l

Be it known that I, QUIMBY S. BAcKUs, of Winchendon, in the county of \Vorcester, and StateV of Massachusetts, have invented certain new and useful Improvements in Vises; -and do hereby declare that the following is 'a full, clear, and exact description thereof, reference being had tothe accompanying drawings and to the letters of reference marked thereon, making a part of this specification. p

The nature of my invention consistsin the construe# tion of a vise, which can be secured t0 the table or bench in any desired position, and in the arrangement ofthe devices hereafter set forth and explained.

Figure 1 is a section-view of my invention.

Figure 2 is an end view of the stationary jaw.

Letter A represents the base of the vise, which rests upon the disk B, and from the -end of which. the stationary jaw C rises.

Formed, upon the top of the base is the cylinder D, upon which the movable jaw E moves back and forth.

In the bottom of this base there is an elongated slot cnt, .entending nearly its whole length, so that the whole vise can be moved to any desired position on the table, or can be entirely removed, at pleasure.

` Passing through the stationary jaw is the screw-shaft F, by means of which the movable jaw is operated.

This shaft has a flange' cut all the wav around its neck, in which the stop G fits, so as to-hold it in place.

Extending outward, from the inner side of the stationary jaw, is a tube, H, which may be either screwed in or cast with the jaw, and which serves to prevent filings, dirt, 86e., from falling upon the screw-shaft.

Extending outward from the movable jaw E there is a similar tube, I, which is small enough to tit in the one from the jaw C, thus forming a complete 4case for the screw-shaft, from one end to the other.

Upon the back end of this tube, inside of the jaw, there is a screwthread cut, in which the shaft F gears, so as to move the jaw back and forth.

In the bottom ot' this jaw there is an opening made, which lits snugly over the top of the cylinder D, (as

Extending upward, through the top of the table, is

a hollow screw-shaft, K, upon the top of which is the dat disk` B, which forms a bed, upon which the vise rests.

Upondhis shaft is placed the nut L, by means of which it is secured firmly to the table.

Passing up through thedrollow screw-shaft K, there is a second, but smaller one, M, which serves to fasten the vise iu any desired position.

Upon the top there is formed ahead, N, which moves back and forth in the slot formed in` the base, while upon the bottom there is a thumb-screw, O, by which the vise is secured ill place.

Having thus fully described myv invention,

\V|,|at I claim, and desire to secure by LettersV Patent, is-

1. The combination of the hollow screw-shaft K,

`witha disk, B, upon its top, screiv-rod liLfianged head N, clampingpscrew L, and screw O, with the grooved cylinder D, all substantially as and for the purposes specified. A

2. The jaws E and C; screw-shaft F, tubes II and I,

dog G, screw-rods K and M, disk B, nuts L, and thumb screw`O, when all are combined to form a vise, snb' stantiall y in the manner and for the purpose specified.,

Witnesses F. A. LEHMANN, J. M. Sroors. 

